So I set up a waypoint mission, with POI’s (Points Of Interest). The mission was to fly between the waypoints, and have the camera point at different landmarks on the ground (the POI’s). After running the mission, I looked at the video and discovered that the the camera wasn't pointing directly at the landmarks - it was a bit off. Is there a way to tweak your mission once on-site to fix this issue? Thanks!

You should be able to, yeah. Bring up your mission then click on the POI. It SHOULD give you the adjustable parameters for the POI. I know in the Mission Hub (On your PC) The height of the POI is adjustable.